This circuit is the power source circuit for the combination meter assembly. This circuit provides two types of power sources; one is a constant power source, and the other is an IG power source.
for HEV Model
for Gasoline Model
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
Inspect the fuses of circuits related to this system before performing the following procedure.
When replacing the combination meter assembly, update the ECU security key.
Disconnect the combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I4-1 (EP) - Body ground | Always | Below 1 Ω |
| I4-2 (ES) - Body ground | Always | Below 1 Ω |
| *a | Front view of wire harness connector
(to Combination Meter Assembly) |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| I4-6 (IG+) - Body ground | Ignition switch off | Below 1 V |
| Ignition switch ON*1 | 11 to 14 V | |
| Ignition switch ON*2 | 10.5 to 16 V | |
| I4-5 (B) - Body ground | Ignition switch off | 11 to 14 V |
*1: w/o Stop and Start System
*2: w/ Stop and Start System
| Proceed to |
|---|
| OK |
| NG |
OK
NG